Binocular vision dysfunction, or BVD, is caused by a subtle misalignment of the eyes, resulting in a host of uncomfortable symptoms as the eyes struggle to produce clear vision. Some patients deal with symptoms of BVD for many years without getting properly diagnosed, despite being “treated” by many healthcare professionals. Because a standard eye exam may not catch BVD, countless children and adults unknowingly suffer from this condition due to underdiagnoses and misdiagnosis.